The tractrix spiral is a spiral with parametric equations
(1)
 
(2)

for .
It is also known as the polar tractrix or complicated tractrix and was studied by Huygens and Varignon in 1704 and Cotes in 1722 (Ferréol).
The tractrix spiral is a spiral with parametric equations
(1)
 
(2)

for .
It is also known as the polar tractrix or complicated tractrix and was studied by Huygens and Varignon in 1704 and Cotes in 1722 (Ferréol).
Weisstein, Eric W. "Tractrix Spiral." From MathWorldA Wolfram Web Resource. https://mathworld.wolfram.com/TractrixSpiral.html